Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A flexible display device comprising: a display region including pixels to display images, each of the pixels including an organic light emitting diode (OLED) configured to receive a signal from a signal line and power from a power line to display the images; and a non-display region outside the display region where images are not to be displayed, the non-display region including: a circuit mount region including therein a driving circuit configured to supply the signal through the signal line and the power through the power line to each of the pixels; and a bending region formed between the display region and the circuit mount region and configured to be bent flexibly, wherein the signal line and the power line are disposed on a same layer in the bending region, and wherein the signal line and the power line are disposed on different layers to overlap each other in the non-display region adjacent to the bending region.
A flexible OLED display has a display area for showing images and a non-display area. The non-display area includes a circuit mount region with driver circuits for supplying signals and power to the display pixels. A flexible bending region is located between the display and circuit mount regions. Within the bending region, the signal lines (for data) and power lines (for OLED voltage) are formed on the same layer. However, in the non-display area right next to the bending region, the signal and power lines are on different layers and overlap each other.
2. The flexible display device of claim 1 , wherein the signal line includes at least one of a gate line to supply a gate signal to each of the pixels and a data line to supply a data signal to each of the pixels, and wherein the power line includes at least one of a driving voltage line to supply a driving voltage to the OLED, a reference voltage line to supply a reference voltage to the OLED, and a ground voltage line.
The flexible OLED display described previously uses signal lines that include gate lines (for pixel switching) or data lines (for image data). The power lines include driving voltage lines (for OLED power), reference voltage lines, or ground voltage lines. The signal lines and power lines exist in the bending region, the display region, and the non-display region, as described in the previous display definition.
3. The flexible display device of claim 1 , wherein the signal line and the power line are spaced apart from each other in the bending region.
The flexible OLED display described previously has a bending region where the signal lines (for data) and power lines (for OLED voltage) are physically separated, with a space between them. The signal and power lines exist in the bending region, the display region, and the non-display region, as described in the previous display definition.
4. The flexible display device of claim 3 , wherein the signal line and the power line are formed in parallel with each other in the bending region.
In the flexible OLED display, the signal lines (for data) and power lines (for OLED voltage) in the bending region run parallel to each other. The signal and power lines are spaced apart in the bending region, and the signal and power lines exist in the bending region, the display region, and the non-display region, as described in the previous display definition.
5. The flexible display device of claim 1 , wherein the signal line and the power line do not overlap each other in the bending region relative to a viewpoint from a front side toward a back side of the flexible display device.
The flexible OLED display is designed such that, when viewed from the front, the signal lines and power lines do not vertically overlap in the bending region. The signal and power lines exist in the bending region, the display region, and the non-display region, as described in the previous display definition.
6. The flexible display device of claim 1 , wherein the signal line and the power line are formed on different layers outside the bending region.
The flexible OLED display has signal lines and power lines that are formed on separate layers outside the bending region. However, inside the bending region they are on the same layer. The signal and power lines exist in the bending region, the display region, and the non-display region, as described in the previous display definition.
7. The flexible display device of claim 1 , wherein a width of the signal line in the bending region is greater than that of the signal line outside the bending region, and wherein a width of the power line in the bending region is greater than that of the power line outside the bending region.
In this flexible OLED display design, the width of both the signal lines and the power lines is greater in the bending region than in the areas outside of it. The signal and power lines exist in the bending region, the display region, and the non-display region, as described in the previous display definition.
8. The flexible display device of claim 1 , wherein at least one of the signal line and the power line is formed in a non-straight form in the bending region.
To improve flexibility, at least one of the signal or power lines in the bending region of the flexible OLED display is not straight. The signal and power lines exist in the bending region, the display region, and the non-display region, as described in the previous display definition.
9. The flexible display device of claim 1 , wherein the signal line and the power line are formed of a same material.
The signal lines and power lines in the flexible OLED display are made of the same material. The signal and power lines exist in the bending region, the display region, and the non-display region, as described in the previous display definition.
10. The flexible display device of claim 1 , wherein each of the pixels includes a switching transistor connected to the signal line and configured to supply the signal to the OLED and a driving transistor connected to the power line and configured to supply the power to the OLED, and wherein an output of the switching transistor is connected to a gate of the driving transistor.
Each pixel in the flexible OLED display contains a switching transistor and a driving transistor. The switching transistor, controlled by the signal line, delivers signals to the OLED. The driving transistor, controlled by the power line, delivers power to the OLED. The output of the switching transistor controls the gate of the driving transistor. The signal and power lines exist in the bending region, the display region, and the non-display region, as described in the previous display definition.
11. The flexible display device of claim 1 , wherein the signal line and the power line are commonly formed on a flexible substrate in the bending region.
In this flexible OLED display, the signal lines and power lines are both formed on the flexible substrate within the bending region. The flexible OLED display has a display area for showing images and a non-display area. The non-display area includes a circuit mount region with driver circuits for supplying signals and power to the display pixels. A flexible bending region is located between the display and circuit mount regions. Within the bending region, the signal lines (for data) and power lines (for OLED voltage) are formed on the same layer. However, in the non-display area right next to the bending region, the signal and power lines are on different layers and overlap each other.
12. The flexible display device of claim 11 , wherein the signal line is formed on the flexible substrate, and the power line is formed on an insulation layer overlying the signal line outside the bending region.
The flexible OLED display described above has signal lines on the flexible substrate, and power lines formed on an insulating layer that sits above the signal lines outside of the bending region. In the bending region, the signal lines and power lines are both formed on the flexible substrate. The flexible OLED display has a display area for showing images and a non-display area. The non-display area includes a circuit mount region with driver circuits for supplying signals and power to the display pixels. A flexible bending region is located between the display and circuit mount regions. Within the bending region, the signal lines (for data) and power lines (for OLED voltage) are formed on the same layer. However, in the non-display area right next to the bending region, the signal and power lines are on different layers and overlap each other.
13. A method of preparing a flexible display device, the method comprising: disposing a substrate including a display region to display images and a non-display region outside the display region where images are not to be displayed, the non-display region including a circuit mount region and a bending region formed between the display region and the circuit mount region and configured to be bent flexibly; forming a signal line and a power line in the display region and the non-display region, the signal line and the power line being disposed on a same layer in the bending region; forming pixels to display the images in the display region, each of the pixels including an organic light emitting diode (OLED) configured to receive a signal from the signal line and power from the power line to display the images; and disposing, in the circuit mount region, a driving circuit configured to supply the signal through the signal line and the power through the power line to each of the pixels, wherein the signal line and the power line are disposed on different layers to overlap each other in the non-display region adjacent to the bending region.
A method for creating a flexible display involves the following: Start with a substrate that has a display area and a non-display area. The non-display area includes a circuit mount region and a flexible bending region between the display and circuit mount regions. Form signal and power lines in the display and non-display regions, ensuring they are on the same layer in the bending region. Create pixels with OLEDs in the display region, which receive signals and power from the signal and power lines. Place driver circuits in the circuit mount region to provide signals and power to the pixels through the signal and power lines. Crucially, the signal and power lines are formed on different layers and overlap in the non-display area adjacent to the bending region.
14. The method of claim 13 , wherein the step of forming the signal line and the power line includes forming the signal line and the power line of a same material using a same fabrication process in the bending region.
When creating the flexible display, forming the signal and power lines includes making them from the same material using the same process in the bending region. The overall method involves: Start with a substrate that has a display area and a non-display area. The non-display area includes a circuit mount region and a flexible bending region between the display and circuit mount regions. Form signal and power lines in the display and non-display regions, ensuring they are on the same layer in the bending region. Create pixels with OLEDs in the display region, which receive signals and power from the signal and power lines. Place driver circuits in the circuit mount region to provide signals and power to the pixels through the signal and power lines. Crucially, the signal and power lines are formed on different layers and overlap in the non-display area adjacent to the bending region.
15. The method of claim 13 , wherein the step of forming the signal line and the power line includes forming the signal line and the power line to be spaced apart from each other in the bending region.
When creating the flexible display, forming the signal and power lines includes placing the signal and power lines with space between them in the bending region. The overall method involves: Start with a substrate that has a display area and a non-display area. The non-display area includes a circuit mount region and a flexible bending region between the display and circuit mount regions. Form signal and power lines in the display and non-display regions, ensuring they are on the same layer in the bending region. Create pixels with OLEDs in the display region, which receive signals and power from the signal and power lines. Place driver circuits in the circuit mount region to provide signals and power to the pixels through the signal and power lines. Crucially, the signal and power lines are formed on different layers and overlap in the non-display area adjacent to the bending region.
16. The method of claim 13 , wherein the step of forming the signal line and the power line includes forming the signal line and the power line to be disposed in parallel with each other in the bending region.
When creating the flexible display, forming the signal and power lines includes placing the signal and power lines parallel to each other in the bending region. The overall method involves: Start with a substrate that has a display area and a non-display area. The non-display area includes a circuit mount region and a flexible bending region between the display and circuit mount regions. Form signal and power lines in the display and non-display regions, ensuring they are on the same layer in the bending region. Create pixels with OLEDs in the display region, which receive signals and power from the signal and power lines. Place driver circuits in the circuit mount region to provide signals and power to the pixels through the signal and power lines. Crucially, the signal and power lines are formed on different layers and overlap in the non-display area adjacent to the bending region.
17. The method of claim 13 , wherein the step of forming the signal line and the power line includes forming the signal line and the power line to not overlap each other in the bending region relative to a viewpoint from a front side toward a back side of the flexible display device.
When creating the flexible display, forming the signal and power lines includes preventing the signal and power lines from vertically overlapping in the bending region when viewed from the front. The overall method involves: Start with a substrate that has a display area and a non-display area. The non-display area includes a circuit mount region and a flexible bending region between the display and circuit mount regions. Form signal and power lines in the display and non-display regions, ensuring they are on the same layer in the bending region. Create pixels with OLEDs in the display region, which receive signals and power from the signal and power lines. Place driver circuits in the circuit mount region to provide signals and power to the pixels through the signal and power lines. Crucially, the signal and power lines are formed on different layers and overlap in the non-display area adjacent to the bending region.
18. The method of claim 13 , wherein a width of the signal line in the bending region is greater than that of the signal line outside the bending region, and wherein a width of the power line in the bending region is greater than that of the power line outside the bending region.
When creating the flexible display, the signal and power lines are formed such that the width of both lines is greater in the bending region compared to the areas outside the bending region. The overall method involves: Start with a substrate that has a display area and a non-display area. The non-display area includes a circuit mount region and a flexible bending region between the display and circuit mount regions. Form signal and power lines in the display and non-display regions, ensuring they are on the same layer in the bending region. Create pixels with OLEDs in the display region, which receive signals and power from the signal and power lines. Place driver circuits in the circuit mount region to provide signals and power to the pixels through the signal and power lines. Crucially, the signal and power lines are formed on different layers and overlap in the non-display area adjacent to the bending region.
19. The method of claim 13 , wherein the step of forming the signal line and the power line includes forming at least one of the signal line and the power line in a non-straight form in the bending region.
When creating the flexible display, at least one of the signal or power lines is formed in a non-straight shape in the bending region. The overall method involves: Start with a substrate that has a display area and a non-display area. The non-display area includes a circuit mount region and a flexible bending region between the display and circuit mount regions. Form signal and power lines in the display and non-display regions, ensuring they are on the same layer in the bending region. Create pixels with OLEDs in the display region, which receive signals and power from the signal and power lines. Place driver circuits in the circuit mount region to provide signals and power to the pixels through the signal and power lines. Crucially, the signal and power lines are formed on different layers and overlap in the non-display area adjacent to the bending region.
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October 10, 2017
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